Keystones — Lintel
Five GCSE retrieval questions · 24 July 2018 · mathsvault.uk/keystones
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1. Number Converting to standard form
520000
Answer: 5.2 × 105 -
2. Algebra Factorising monic quadratics
Factorise: x² + 3x - 28
Answer: (x + 7)(x - 4) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 25cm, angle = 59°. Find adjacent side
Answer: 12.9cm -
4. Ratio Mixed ratio problems
Divide 143 in the ratio 3:4:4
Answer: 39, 52 and 52 -
5. Statistics Mean
Calculate the mean of: 17, 35, 39, 17, 16, 8, 41
Answer: 24.7